Form Accessibility for Web Developers

You know how to build a form. But do you know what makes it accessible and how to check your work?

You can create fields, validate input and submit information successfully. Yet questions about accessibility can still leave you unsure what to do.

Is adding a label enough? How should instructions be connected to a field? How will someone using a screen reader discover an error? What happens when you disable a control or hide a group of questions?

This course is for web developers who need to understand accessibility and apply it to the forms they build.

It’s designed as an evergreen course, with the content updated as accessibility guidance, browser behaviour and development practices evolve.

Through focused explanations, demonstrations and practical coding examples, you’ll learn what to implement, why it matters and how to test the result. You’ll work with the HTML and JavaScript behind familiar form features and explore how your decisions affect people using a keyboard or screen reader.

Understand the decisions, not just the attributes

Knowing that an accessibility technique exists is different from knowing when and how to use it.

You might have seen examples using labels, ARIA attributes or error summaries without fully understanding the problem they solve. Copying the code does not necessarily help when your own form behaves differently.

This course connects each technique to its purpose. You’ll explore what users need, what the browser communicates to assistive technology, and how changes to your code affect that experience.

The aim is to help you make informed implementation decisions, rather than depending on snippets you cannot confidently explain or adapt.

What you’ll be able to do

• Make fields and instructions easier to understand. Associate labels, descriptions and supporting information with form controls. Understand how a control receives its accessible name, the name assistive technology uses to identify it.

• Give related controls the context they need. Group questions and choices so users can understand both the individual controls and their shared purpose.

• Help people complete forms with fewer uncertainties. Use autocomplete, required-field indicators and character-limit information to communicate what is expected and support form completion.

• Make validation errors easier to discover and correct. Build accessible inline validation and error summaries that explain what went wrong and help users reach the fields that need attention.

• Handle form states with an understanding of their effects. Explore how disabled, read-only and hidden controls behave for keyboard and screen reader users and recognise when an implementation creates confusion or barriers.

See the problem. Change the code. Check the result.

You won’t only see a finished example and be told that it is accessible.

Each unit starts with a specific problem. We’ll explore how the form behaves, investigate what is going wrong and work through the changes needed to improve it.

Screen reader demonstrations let you hear how controls and information are presented. Browser accessibility tools let you inspect the accessibility tree—the information the browser exposes to assistive technology.

Then we’ll test the changed implementation so you can connect the code with an observable difference in behaviour.

This gives you a practical way to investigate your own forms, rather than relying on whether they look right.

Work with the examples yourself

Runnable CodePen examples let you move from watching a technique to trying it.

Follow along with the code, make changes and explore what happens. Return to the examples when you need a reminder or adapt the techniques to a form in your own project.

Lessons are short and focused. Work through the course in sequence to build your understanding, then revisit individual topics when you encounter a similar problem during development.

Focused on the work you do as a developer

Whether you’re building a new form, improving an existing one or responding to accessibility feedback, this course focuses on the implementation decisions you need to make.

Accessibility concepts are explained through familiar development tasks: labelling fields, adding instructions, validating input and managing the visibility and state of controls.

The focus is not simply on learning accessibility terminology. It is on understanding what that terminology means for the code you write and the experience it creates.

Learn from the accessibility expert

I’m Ross Mullen, an accessibility expert. I work with development teams dealing with the kinds of form accessibility problems covered in this course.

These lessons bring that practical experience into explanations, demonstrations and examples you can work through yourself.

My aim is to help you understand why a solution works, so you can apply that understanding when your next project does not look exactly like the course example.

Join the course and learn to build, improve and test accessible forms—with an understanding you can take into your own development work.